System Start-up
RT-SVX35H-EN
67
Flame Failure
In the event that IC board
4U18 loses the “proof-of-flame”
input signal during furnace operation, it will make one
attempt at reignite. If a flame is not reestablished within
the 10 second trial period, 4U18 will shut down and lock
out the ignition /combustion control circuit. (Combustion
blower motor 4B11 continues to run as long as a heating
requirement exists and control circuit switch 4S24 is ON.)
Once locked out on flame failure, the IC board will not
reactivate the ignition/combustion control circuit until it is
reset manually. To do this, press the reset button on the
front of the IC board case.
A set of relay contacts are available for external use for
heat fail (Information Only).
Important:
The modulating gas heaters are factory
adjusted for the proper air/gas ratio at
minimum and nameplate rated firing MBH
for most areas in the country.
Summary of Contents for IntelliPak WEHE Series
Page 15: ...General Information RT SVX35H EN 15 Figure 1 Unit component layout and ship with locations...
Page 17: ...Installation RT SVX35H EN 17 Figure 2 Typical control module location...
Page 44: ...Installation 44 RT SVX35H EN Figure 27 Typical field power wiring for W_HE casings 2 through 6...
Page 56: ...Installation 56 RT SVX35H EN Figure 32 Wiring notes for CV controls...
Page 60: ...Installation 60 RT SVX35H EN Figure 35 Wiring notes VAV...
Page 68: ...System Start up 68 RT SVX35H EN Figure 38 Typical fenwall ignition control system...
Page 69: ...System Start up RT SVX35H EN 69 Figure 39 Typical Fenwall ignition control system...